diff --git a/boot_diags/src/components/progress.rs b/boot_diags/src/components/progress.rs
index 3ab25ea..7c1bcf8 100644
--- a/boot_diags/src/components/progress.rs
+++ b/boot_diags/src/components/progress.rs
@@ -86,8 +86,23 @@ impl Component for Progress {
                     &result, &text
                 );
                 if let Some(line) = self.lines.last_mut() {
-                    line.result = result;
-                    line.text = text;
+                    let old_result = line.result.clone();
+                    match (old_result, result.clone()) {
+                        (DiagResult::Pass, _) => {
+                            line.result = result;
+                            line.text = text;
+                        }
+                        (DiagResult::Warn, DiagResult::Pass | DiagResult::Warn) => {
+                            line.text = String::from("Unknown");
+                        }
+                        (DiagResult::Warn, DiagResult::Fail) => {
+                            line.result = DiagResult::Fail;
+                            line.text = String::from("Unknown");
+                        }
+                        (DiagResult::Fail, _) => {
+                            line.text = String::from("Unknown");
+                        }
+                    };
                 }
             }
             Action::DiagLineEnd { text } => {